Hi @Anonymous ,
Do you want to divide the entity records to 100 per page in the gallery, and the first page to show the first 100 records?
If you do, please set the gallery screen’s OnVisible to:
Set(FROMID,Value(Last(FirstN(Sort(Personas,Value(ID),Ascending),100)).ID))
Then set the gallery’s Items:
Sort(Filter(Personas,Value(ID)<= Value( FROMID), Value(ID)> (Value(FROMID)-100)),Value(ID))
At last, to update the variable, set the OnSelect of the Next Icon to:
Set(FROMID,Value(Last(Sort(Gallery1.AllItems,Value(ID))).ID)+100)
I've made a test:

Is it like what you want?
Best regards,
Community Support Team _ Jeffer Ni
If this post helps, then please consider Accept it as the solution to help the other members find it more.